Portable bead roller

Abstract

A machine for forming a bead on a tubular work piece includes a first circular die engageable with the inner surface of the tubular work piece and a second circular die engageable with the outer surface of the tubular work piece. The first die cooperatively engages the second die so that the work piece material is reformed into a bead by a bending process and also by an extrusion process. Tubular stock having a relatively large wall thickness can be handled by the machine.

What is claimed: 
     
       1. A machine for forming a bead on a tubular workpiece, comprising: (a) a hollow carrier comprised of a hollow tubular rectangular housing;   (b) a first lower horizontal shaft, and first means supporting said shaft for rotary motion around the shaft axis; said first horizontal shaft and supporting means carried within said hollow carrier;   (c) a first internal circular die mounted on said lower shaft for contacting the inner surface of a tubular workpiece;   (d) a second upper horizontal shaft and second means for supporting said second shaft for motion around the second shaft; said second shaft and supporting means located within a rectangular hollow housing, said housing pivotally carried within said hollow carrier and having sidewalls slidably engaged within said hollow carrier;   (e) a second external circular die mounted on said upper shaft in radial alignment with said first die, whereby the wall of a tubular workpiece can be subjected to a squeeze force by moving the rectangular hollow housing downwardly toward the second shaft;   (f) a first gear carried by said first shaft, and a second gear carried by said second shaft; said gears being in mesh with each other for transmitting rotational motion from one shaft to the other, and means for rotating one of said shafts.   
     
     
       2. The machine of claim 1, wherein said shaft rotating means comprises a hand crank connected to said lower shaft. 
     
     
       3. The machine of claim 1, and further comprising manual means for adjusting said hollow housing toward or away from said lower shaft. 
     
     
       4. The machine of claim 3, wherein said manual adjusting means comprises a manually operated screw. 
     
     
       5. The machine of claim 3, wherein said second shaft support means comprises two axially-spaced anti-friction shaft bearings located in said rectangular hollow housing. 
     
     
       6. The machine of claim 5, wherein said second gear is located between said axially-spaced shaft bearings.